Wärtsilä 20 Diesel Engine Gets a Power Upgrade

An upgraded version of the Wärtsilä 20 diesel engine features
greater power density thanks to increased cylinder output. The
new engine will receive its officially launch at the Marintec
conference and exhibition in Shanghai, China from December 5 to
8.

According to the manufacturer, the increased maximum output of
the new Wärtsilä 20 will enable vessels to accommodate greater
payloads or achieve faster speeds with almost the same low fuel
consumption as the current version, and will also improve bollard
pull capacity for tugs and support vessels.

Furthermore, by increasing the output per cylinder from 185kW to
220kW, fewer cylinders will be needed when installed in 60Hz
generating sets, meaning a lighter and more compact generating
set is possible within the 1.3 to 2 MW merchant auxiliary
segment.

Stefan Wiik, Vice President, Engines, Wärtsilä Marine Solutions,
said, "The new Wärtsilä 20 engine has the best power-to-weight
ratio on the market in its segment. This provides an exciting
value proposition for owners of ships where a light yet powerful
engine is an advantage."

The new engine is a refinement of the existing Wärtsilä 20
engine, and as such remains highly compatible with the spare
parts needed. Maintenance procedures are mostly unchanged also.

More than 6,000 Wärtsilä 20 engines have been delivered since its
introduction to the market in the early 1990s. Applications
include merchant ships, special vessels and offshore
applications.

The engine can switch from MDO to HFO and vice versa without
power interruption at any engine operation load. The engine is
fully compliant with the IMO Tier II exhaust emissions
regulations set out in Annex VI of the MARPOL 73/78 convention,
and IMO Tier III compliance is available as an option together
with the Wärtsilä NOR SCR system.

The upgraded Wärtsilä 20 is included in Wärtsilä's newly
introduced HYTug series featuring integrated energy storage and
power management systems.